Method for dimensioning the admission pressure at an analogized electromagnetically actuated hydraulic valve

摘要

A method for dimensioning the admission pressure at a first, analogized, electromagnetically actuated hydraulic valve for sensitively regulating the pressure in a pressure circuit in which the admission pressure at the first valve can be set by the delivery capacity of an engine pump assembly which is connected to the first valve via a pump-outlet-side pressure line, in particular in a hydraulic motor vehicle brake system, wherein the admission pressure is set by electronically evaluating the tappet reaction of the first valve or of a further hydraulic valve which is also actuated electromagnetically and is connected to the pump-outlet-side pressure line. An electronically controlled motor vehicle brake pressure control device with which the above method can be carried out is also described.

主权项

1. A method for dimensioning an admission pressure at a first, analogized, electromagnetically actuated hydraulic valve for sensitively regulating the pressure in a pressure circuit in which the admission pressure at the first valve is configured to be set by a delivery capacity of a motor pump assembly which is connected to the first valve via a pump-outlet-side pressure line in a hydraulic motor vehicle brake system,
wherein the admission pressure is set by electronically evaluating a tappet reaction of the first valve or of a further hydraulic valve which is also actuated electromagnetically and is connected to the pump-outlet-side pressure line, the tappet reaction comprising both a change in position of the tappet and a change in hydraulic force on the tappet, wherein the tappet reaction is determined by an electrical tappet position control circuit, and wherein the admission pressure is generated at least in part by a motor pump assembly, and in order to dimension the admission pressure, an electrical signal from the tappet position control circuit is used to calculate a setpoint value for a motor of the motor pump assembly.